Gas-heater.



PATENTED NOV. 3, 1903.

J. G. BURNS.

GAS HEATER.

APPLICATION FILED FEB. 21. 1903.

N0 MODEL.

WITNEEEEE INVENTUFI v./Of1/\/ 5 ORA/S Q06 W @MAT W HTTUHNEY Patented November 3, 190 3.

UNITED STATES PATENT OFFICE.

JOHN G. BURNS, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-THIRD TO WILLIAM G. KILHOFFER, OF BUFFALO, NEW YORK.

GAS-HEATER.

SPECIFICATION forming part of Letters Patent No. 743,059, dated November 3, 1903.

Application filed February 21, 1903. Serial No. 144,415. (No model.)

To all whom it may concern:

Be it known that I, JOHN G. BURNS, a citizen of the United States, residing at Bufialo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Gas-Heaters; and Ida hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings,and to figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in gas-heaters, and more particularly to that class which are specially designed for use in connection with natural gas.

The object of my invention is to provide a novel form of heater which shall be both simple and economical in construction and at the same time productive of a perfect combustion of the gas with a maximum amount of heat.

To that end my invention consists of a burner, a mixing tube or chamber, and a com bustion or heating chamber comprising two semispherical sections, the lower section being mounted upon the mixing-tube which passes up into the body of the same, the upper section being removably seated upon the lower section, the two sections being provided with suitable openings for the admission of air and the discharge of heat, and a removable perforated diaphragm or spreader centrally seated between the two semispherical sections.

In the drawings, Figure l is an elevation of my improved heater, shown mounted upon a gas-bracket. Fig. 2 is a central Vertical section of the heater. Fig. 3 is a top plan view of the heater with the upper section removed, and Fig. 4 is a similar view with the upper section and diaphragm or spreader removed.

Referring to the drawings, 1 is the mixing tube or chamber,with the usual opening 2 for the admission of air.

3 is the gas-nozzle, provided with the valve 4 for regulating the quantity of gas to be released into the mixing-tube 1, all of which is shown in Fig. 1 as mounted upon a gasbracket 5, provided at its outer end with the burner 6 for lighting purposes. Any other well-known form of burner could be employed and with any kind of gas.

Rigidly mounted upon the mixing-tube 1 is the lower semispherical section 7 of the heater. This section is preferably of cast metal and has the lower cylindrical extension 8 provided upon its floor with'the openings 9 (see Fig. 4) for the admission of air into the combustion or heating chamber.

10 10 are additional openings in the lower wall of section 7 for thesame purpose.

A series of spaced elongated slats 11 are arranged in the upper wall of section 7, extending from its upper edge downwardly to a line about midway of its height.

A band 12, of wrought metal, tightly encircles the upper edge of section 7 and extends above such edge, forming a seat for the removable reception of the-metal diaphragm or spreader 13, provided with concentric series of perforations 141.

, 15 is the upper semispherical section of the combustion or heating chamber and rests re movably upon the diaphragm or spreader 13 and within the surrounding band 12 or in the absence of the diaphragm or spreader directly upon the upper edge of the lower section 7. Its upper wall has a series of apertures 16, through which heat is discharged.

17 is a metal knob by which the upper section 15 may be lifted out of its socket.

In operation the heat generated from the flame at the upper end 18 of the mixingchamber 1 (which extends well up into the combustion or heating chamber, as shown in Fig. 2) is deflected or spread by the diaphragm 13 toward the slots 11 and forced through the same out of the combustionchamber, while the air entering through the opening 9 and apertures 10 serve to properly support combustion within thechamber. A considerable portion of the heat passes up through the perforations 14 in the diaphragm or spreader 13. This heat circulates upwardly in the section 15 and escapes through the apertures 16 in its upper wall.

With my improved heater, as above constructed, the combustion is perfectly maintained, and the perfect circulation provided permits of the generation of a maximum amount of heat, which is effectively thrown out through the elongated slots 11 and apertures 16. By removing the upper section 15 a vessel may be conveniently placed upon the band 12 and its contents quickly heated, and

if the diaphragm or spreader is removed the flame may be used directly against the bottom of the vessel. One or more of my improved heaters may be placed within a metal casing to form a stove, and by enlarging its dimensions it can be successfully employed for furnace purposes.

I claim A gas-heater consisting of a burner, a mixing tube or chamber, a combustion or heat- 

